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VRLA Batteries Manufacturers

As a professional and leading VRLA battery manufacturer in China, Leadmax Battery has been researching and manufacturing VRLA (valve-regulated lead acid) industrial batteries for over 13 years, during this time we have been one of the most comprehensive manufacturers within the battery industry. Most importantly, our VRLA battery manufacturing has covered the full industrial chain, we have our revolutionary new technologies, including TTP-welding, heat sealing, battery case injection process, High-Tin alloy grid, inner formation, and cast-welding, etc.,

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General Purpose Battery

Leadmax General Purpose (GP) Series VRLA batteries are designed with AGM (Absorbent Glass Mat) technology, high-performance plates, and electrolytes to give extra power output for a common power backup system. GP battery is the general purpose battery with 5-10 years design life in floating service, which has 2V, 4V, 6V, and 12 Voltage with a capacity range from 1.3Ah to 3000Ah. the operating temperature range is minus 20℃ to 50℃. For GP battery, our most hot-selling model is GP7.0-12 in 12 voltage with 7AH capacity, and it is 2kg/pc. With advanced AGM technology and high purity of raw materials, GP series battery is popularly used for general applications, such as UPS systems, alarm systems, and power tools, etc.

General Purpose Batteries Application:

  • Marine craft: yachts, electric boats, sail yachts, etc.
  • Uninterruptable power supply (UPS for telecom)
  • Emergency backup power supply (EPS for security)
  • Telecommunication power system
  • Solar and wind energy storage
  • Fire control, security defense system
  • Photovoltaic power station

Deep Cycle Battery

Leadmax General Purpose (GP) Series VRLA batteries are designed with AGM (Absorbent Glass Mat) technology, high-performance plates, and electrolytes to give extra power output for a common power backup system. GP battery is the general purpose battery with 5-10 years design life in floating service, which has 2V, 4V, 6V, and 12 Voltage with a capacity range from 1.3Ah to 3000Ah. the operating temperature range is minus 20℃ to 50℃. For GP battery, our most hot-selling model is GP7.0-12 in 12 voltage with 7AH capacity, and it is 2kg/pc. With advanced AGM technology and high purity of raw materials, GP series battery is popularly used for general applications, such as UPS systems, alarm systems, and power tools, etc.

Deep Cycle Batteries Application:

  • Electronic toys
  • UPS & EPS System
  • Generator Starting
  • Solar Power / Wind Power Systems
  • Electronic powered vehicles/golf cars and buggies

GEL Battery

Leadmax GEL battery series perfectly fits with renewable energy system applications due to more than a 10-year professional floating life design, making it offer excellent performance under harsh environments. Adopting patented gel electrolytes, high-purity lead, and strong grids, cycle life after frequent deep discharge still can deliver over 400 cycles at 100% DOD.

GEL Batteries Application:

  • Electronic toys
  • UPS & EPS System
  • Generator Starting
  • Solar Power / Wind Power Systems
  • Electronic powered vehicles/golf cars and buggies

High Rate Battery

Leadmax high-rate battery series is specially designed for the backup storage energy system, many applications are needed to save data and power in all ordinary time, in case to reduce the loss of data, Leadmax designed a highly efficient battery with 5-10 years of floating service life under high or low temperature. At 20℃ ( 68℉), the float life can be up to 10-15 years. After 6 months, self-discharge can still reach 82%. Our high-rate battery has 12V and the capacity ranges from 7 to 200, the weight is from 2.15kg to 65kg depending on the capacity.

High Rate Batteries Application:

  • Electronic toys
  • UPS & EPS System
  • Generator Starting

Front Terminal Battery

Leadmax front terminal battery series has achieved excellent high performance and over 10 years long service life, which can meet the global high security and reliability requirements. It is also a perfect choice for some data applications, like communication, emergency power systems, UPS systems, and so on. The front terminal battery has 12V, and the capacity ranges from 55 to 200AH, at 20℃ ( 68℉), the float life can be up to 10-15 years. The special design for the front terminal battery allows it to install faster than a normal battery and shows a high-reliability performance.

Front Terminal Batteries Application:

  • Telecommunications
  • UPS & EPS System

OPzV Battery

Leadmax 2V OPzV battery is a highly efficient battery that is specially designed for renewable systems or similar applications that require of long service life, maintenance-free, high reliability, and performance battery. The model is an excellent choice for a renewable power system with more than 20 years of floating design life at 25℃ ( 77℉). Die-casting positive grid and the patented formula a key aspects in designing and manufacturing Leadmax OPzV batteries, and the die-cast tubular plates give outstanding cycling performance when deep discharges are carried out, greater active material retention is provided.

OPzV Batteries Application:

  • Telecommunications
  • UPS & EPS System
  • Solar Power / Wind Power Systems

OPzS Battery

Leadmax 2V OPzS battery series has achieved an extremely high level of cycling expectancy, which is using the tubular plates. OPzS battery features low maintenance, acid-proof and explosion-proof, which is an unexceptionable option for renewable power systems, like solar system, wind system and so on, the operation temperature range from minus 40℃ ( minus 40℉) to 65℃ ( 149℉). The model lasts a 15-year long designed floating life of 25℃ ( 77℉). Leadmax 2V OPzS battery shows a preeminent performance after deep discharge, cycle times up to 8,000 cycles at 20%DOD, and 2,000 cycles at 80%.

OPzS Batteries Application:

  • Telecommunications
  • UPS & EPS System
  • Solar Power / Wind Power Systems

Advantages Of Deep-Cycle Batteries

Longer life

The microcracks formed by the shrinkage of the colloid make oxygen diffuse from the positive electrode to the negative electrode in the form of a gas phase, realize the recombination of oxygen, improve the recombination efficiency of oxygen, and reduce the loss of water. The colloidal electrolyte will not reduce the capacity of the deep-cycle colloidal battery and can increase the life of the primary battery by more than 50%. Very pure fumed silica, free of substances that affect the performance of deep cycle gel batteries, with high surface activity and strong gel strength. The stabilizer can increase the viscosity of the system, eliminate the hydration stratification of the colloidal electrolyte, and delay the gel formation time. Positive and negative voltage inhibitors can reduce the evolution of positive and negative hydrogen and oxygen.

Maintenance free

Small, robust, extremely reliable batteries, requiring no regular maintenance

High rate performance

Low inner resistance allows higher discharging and charging current for better performance in high rate application

Higher Low-Temperature Performance

The formation of the dense PbSO4 crystal layer and its coverage on the surface of the negative plate is delayed, and the low-temperature performance of the deep-cycle gel battery is improved.

Better Deep Cycle Capability

Anti-corrosion lead-calcium alloy plate provides longer float charging Reduce the current density to obtain firmly bonded PbO2, delay the softening and shedding of the electrode plate, and improve the deep cycle capability of the Deep cycle gel battery.

Deep Discharge

Can withstand very deep discharges without being damaged

Why Choose VRLA Batteries from Leadmax

As a superior VRLA battery manufacturer, we have a complete valve-regulated lead-acid battery production line. We VRLA battery factory in China, and factories in the area of continuous expansion. Complete product certification, follow the principle of “high quality, efficient” service, domestic and international distribution network is gradually saturated to ensure the best service for local customers around the world.

  • Competitive Price due to CN Bulk Production.
  • Small QTY support,Accept mixed models for FCL order
  • Extremely Competive price on Automotive Battery
  • Over 20 years experience in Lead-Acid battery industry
  • Fast delivery,15-35 days

China Factory

Small QTY Support

13 years Experience

Fast Delivery

FAQs Of VRLA Batteries

VRLA and AGM are related, but not the same thing.

VRLA uses a valve to regulate the pressure inside the battery and prevent the escape of gases during normal operation.

AGM, on the other hand, stands for Absorbed Glass Mat, which is a specific type of VRLA battery technology. AGM batteries use a special fiberglass mat between the battery plates to hold the electrolyte in place, which allows the battery to be sealed and maintenance-free. Therefore, AGM batteries are a type of VRLA battery, but not all VRLA batteries use the AGM technology. Other types of VRLA batteries include gel batteries and flooded batteries, which use a different technology to immobilize the electrolyte and provide a maintenance-free design.

VRLA refers to valve regulated rechargeable battery which is a type of rechargeable battery that uses lead-acid chemistry to produce electrical energy. The term "valve-regulated" means that the battery is designed to recombine hydrogen and oxygen gases that are produced during charging, thereby reducing the amount of water loss and preventing the battery from drying out.

VRLA batteries are sealed and do not require regular maintenance. VRLA rechargeable battery is commonly used in a variety of applications, such as backup power systems, UPS (uninterruptible power supply) systems, electric vehicles, and telecommunications equipment.

AGM batteries generally offer superior performance and reliability compared to SLA batteries, especially in demanding applications requiring maintenance-free operation, higher energy density, and better cycling capabilities. AGM batteries boast faster charging times due to lower internal resistance, enabling them to accept higher charging currents and charge more rapidly. Additionally, AGM batteries excel in deep cycling applications, handling deep discharges more effectively than SLA batteries. However, in situations where upfront cost is a significant consideration and the specific advantages of AGM batteries are not essential, SLA batteries may still be preferred.

lithium batteries excel in high energy density, long cycle life, and fast charging, while VRLA batteries offer reliability, cost-effectiveness, and safety for certain applications. Choosing between them depends on specific requirements such as energy density, lifespan, and safety considerations.

VRLA (Valve-Regulated Lead-Acid) batteries are typically considered "dry" batteries. This designation means that while they contain electrolyte like traditional lead-acid batteries, the electrolyte is immobilized in either an absorbent glass mat (AGM) or gel form. This immobilization prevents the electrolyte from freely flowing inside the battery, making it maintenance-free and less prone to leakage, even if the battery case were to break. Therefore, VRLA batteries are sometimes referred to as "maintenance-free" or "sealed" lead-acid batteries.

VRLA (Valve-Regulated Lead-Acid) batteries are not typically designed for deep-cycle applications. While they can tolerate some cycling, their primary design is for standby or float applications, where they remain at full charge most of the time and only occasionally discharge during power outages or other emergencies.

For deep-cycle applications, such as renewable energy storage or electric vehicles, specialized deep-cycle batteries, like flooded lead-acid batteries or AGM deep-cycle batteries, are more suitable. These batteries are specifically engineered to withstand repeated deep discharges and recharges

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